SonicWall Router Configuration

DEFAULT SETTINGS    Our test lab results show that the default firewall rules are sufficient in order to allow two-way communication.  The phones will initially send a request to register with Aptela.   The registration process will open a pinhole in the firewall and allow communication to that phone in and out.    There are two layers at which you can create rules: Network and Transport.  The difference is the Network layer specifies IP addresses and the Transport layer specifies the port numbers.  When users begin to add their custom rules to accommodate their network with security, there is a tendency to add rules which will inadvertently block the same ports that the VoIP phones are using.  This is why it is necessary to be careful when creating rules.   Also, be careful not to have overlapping rules as well as this will slow down the processing time and increase cpu load.  APTELA RECOMMENDED SETTINGS  We recommend that you allow for all traffic at any port coming from Aptela's two subnet ranges: 74.217.82.1 thru 74.217.82.254  This will ensure that all signaling and audio traffic is allowed to return into your network and reach your phones. If you have one-way or no audio, please make sure these rules  are added.  To add these rules, click on Firewall -> Access Rules -> Add.  First, click the Allow radial button.    We recommend that you use Service : 'Any' to allow traffic from all ports.  The Source will be WAN and the Address Range Begin and End (see below).    The Destination should be LAN and Address Range Begin should be '*'.  Click OK to save and then proceed to add the second subnet range.  Next, go to Firewall -> VoIP settings. There, check “Enable consistent NAT” and uncheck “Enable SIP Transformations”.  Make sure the H.323 Setting is unchecked as Aptela does not use the H.323 VoIP protocol.    Lastly, click Apply at the top of the screen.

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